Etiology and Clinical Patterns of Chronic Cough in the Chest Clinic of a Tertiary Hospital in Nigeria.

Purpose: The burdens of chronic cough are mostly reported from Western and Asian countries. We aimed to determine the etiology and clinical patterns of chronic cough (CC) in the chest clinic of a tertiary hospital in Nigeria. Patients and Methods: This survey was a cross-sectional study of 218 patients. Chronic cough was defined as cough >8 weeks duration. The evaluation and diagnosis of patients was based on a diagnostic protocol developed from the international respiratory societies cough guidelines and a previous study. Results: The median age of patients was 50 years (interquartile range 30-68). One etiology was identified in 96.3% of cases; dual etiologies in 2.3%, and 1.4% had an unexplained cough. The most frequent causes of cough were COPD (33.5%), PTB (27.1%), and asthma (21.1%) which included 3 cases of cough variants of asthma (CVA). Other causes were post-tuberculosis lung disease (bronchiectasis and fibrosis) in 6.9%, lung cancer in 4.7%, and interstitial lung disease (ILD) in 3.2%. Gastroesophageal-related cough (GERC) accounted for <1.0%. Before the age of 45, the chronic cough was more frequent in the females than in the males, and the commonest cause was asthma, whereas, beyond age ≥ 45, the occurrence in males surpasses that of the females, and the commonest cause was COPD. Eighty-six percent reported shortness of breath as the most associated symptom. Systemic hypertension (15.6%) was the most frequent comorbidity, followed by HIV infection (3.7%). Chest radiograph, sputum GeneXpert MTB/RIF for TB, spirometry, and detailed history and trial of treatment, were enough to identify the cause in 72% of cases. Conclusion: The etiology and clinical patterns of chronic cough in this study are different from the western countries. When evaluating and managing chronic cough, clinicians in sub-Saharan Africa and TB endemic countries should consider these geographical variations in etiologies and clinical presentation.

Prevalence of asthma and respiratory symptoms during pregnancy in the middle belt of Nigeria.

Background: Information about the burden of asthma during pregnancy in Africa is scarce.Objectives: To determine the prevalence of asthma and respiratory symptoms in pregnancy in Ilorin, Nigeria.Methods: This study uses the European Community Respiratory Health Survey (ECRHS) questionnaire and definitions to screen 870 pregnant women attending three hospitals for asthma.Results: The prevalence of possible asthma (i.e. awakened by shortness of breath, asthma attack(s) in the last 12 months, or currently taking asthma medication) was 2.1% (95% CI: 1.3-3.1%), physician-diagnosed asthma was 1.0% (95% CI: 0.5-1.7%), and current asthma (asthma attack in the last 12 months and currently taking asthma medication) was 0.7% (95% CI: 0.2-1.3%). The prevalence of respiratory symptoms ranged from 0.6% (95% CI: 0.1-1.1%) for wheezing without cold to 12.9% (95% CI: 10.7-15.2%) for nasal allergies. Less than 1% reported an asthma attack and using asthma medication in the last 12 months. None of the pregnant women smoked tobacco during pregnancy. Pregnant women with possible asthma experienced more respiratory symptoms and worsening symptoms than those without asthma (15.8% vs. 3.9%), and the most reported symptom was being awakened by shortness of breath. The majority (55.6%) with physician-diagnosed asthma had suffered an asthma attack in the current pregnancy with a median of two attacks.Conclusion: The prevalence of asthma and respiratory symptoms in pregnancy in this sample was low, but we observed an increase and worsening of respiratory symptoms during pregnancy in those with asthma. Hence, the priority of clinicians should be disease control to prevent feto-maternal morbidity and mortality.

Development and validation of a questionnaire to assess the doctors and nurses knowledge of acute oxygen therapy.

BACKGROUND: Prescription and administration of oxygen in emergencies by healthcare providers are reported to be inappropriate in most settings. There is a huge gap in the knowledge of health care providers on various aspects of oxygen therapy, and this may be a barrier to optimal oxygen administration. Hence, it is essential to ascertain providers' knowledge of acute oxygen therapy so that appropriate educational interventions are instituted for better delivery. There is no available validated instrument to assess knowledge of acute oxygen therapy. The study aimed to develop, validate and evaluate the test-retest reliability of a questionnaire to determine the doctors and nurses understanding of acute oxygen therapy. METHODS: This study involved the development of the questionnaire contents by a literature review, assessment of face validity (n = 5), content validity, using a panel of experts (n = 10), item analysis and test-retest reliability among a sample (n = 121) of doctors and nurses. RESULTS: Face validity indicated that the questionnaire was quick to complete (10-15 min), most items were easy to follow and comprehensible. The global content validity index (S-CVI) was 0.85. The test-retest reliability statistics showed a kappa coefficient of 0.546-0.897 (all P<0.001) and percentage agreement of 80-98.3% indicating high temporal stability in the target population. In total, 90% of the items fulfilled the reliability acceptance criteria. Item discrimination analysis showed that most questions were at an acceptable level. The final questionnaire included 37 item questions and eight sections. CONCLUSION: The designed questionnaire is a reliable and valid tool for assessing knowledge of acute oxygen therapy among doctors and nurses.